LME41.091C2 Siemens Burner Control

Overview

The Siemens LME41.091C2 is a high-performance, microprocessor-based burner control designed for the startup and supervision of 1- or 2-stage gas burners. Engineered for intermittent operation, this control unit ensures safe and precise combustion for atmospheric burners of small to medium capacity. It is a direct modern replacement for legacy models like the LGB and LMG series, featuring a digital signal handling system that provides an accurate and repeatable control sequence. The LME41.091C2 is a critical safety component for industrial heating systems, offering robust protection against operational hazards such as undervoltage or loss of flame.

Features

• Digital signal handling for high-precision control and repeatable timing sequences
• Multicolor LED interface for clear indication of operational status and fault messages
• Undervoltage detection mechanism that prevents operation if the power supply falls below safe levels
• Air pressure supervision with a functional check of the air pressure switch during startup and operation
• Integrated electrical remote reset facility for efficient maintenance and troubleshooting
• Limitation of the number of repetition cycles to enhance system safety
• Heat-resistant and flame-retardant plastic housing designed for demanding industrial environments
• Controlled intermittent operation with a mandatory shutdown after a maximum of 24 hours of continuous use

Specifications

• Model: LME41.091C2
• Supply Voltage: AC 230 V (+10% / -15%)
• Mains Frequency: 50 to 60 Hz (+/- 6%)
• Power Consumption: 12 VA
• Safety Time (TSA): Max. 10 seconds
• Prepurge Time (t1): Min. 1 second
• Waiting Time (tw): Max. 2.5 seconds
• Degree of Protection: IP40 (when properly mounted)
• Operating Temperature: -20 C to +60 C
• Identification Code (EN 298): AMCLXN
• Weight: Approximately 160g

Applications

• Startup and supervision of 1- or 2-stage atmospheric gas burners
• Forced draft gas burners when used with a QRA flame detector and AGQ3.xA27 ancillary unit
• Blue-flame monitoring when paired with QRC blue-flame sensors
• Ideal for small to medium capacity gas-fired equipment such as industrial boilers and HVAC heaters
• Use in automated combustion systems requiring linkageless or actuator-based air/fuel control
• Suitable for integration into gas trains by original equipment manufacturers (OEMs) for residential or commercial heating plants